2,6-di-tert-butyl-4-ethylidene-2,5-cyclohexadien-1-one, 2,5-Cyclohexadien-1-one,2,6-di-tert-butyl-4-ethylidene, 2,6-Di-tert-butyl-4-ethylene-2,5-cyclohexadiene-1-one, 2,1-dimethylethyl)-4-ethylidene-2,5-cyclohexadiene-1-one, 2,6-di-tert-butyl-4-ethylidenecyclohexa-2,5-en-1-one, 2,2,6-di-tert-butyl-4-ethylidene, 4-Aethyliden-2,6-di-tert-butyl-cyclohexa-2,5-dienon, 4-ethylidene-2,6-di-tert-butyl-cyclohexa-2,5-dienone